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bridging: Fix a livelock with local channel optimization.

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Use a better means of waking up the bridge channel thread.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/12@397650 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2013-08-26 16:24:51 +00:00
parent 2d57781191
commit 7a60a318ce
2 changed files with 2 additions and 8 deletions
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8
main/bridge_channel.c
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@@ -110,10 +110,8 @@ int ast_bridge_channel_notify_talking(struct ast_bridge_channel *bridge_channel,
static void bridge_channel_poke(struct ast_bridge_channel *bridge_channel)
{
if (!pthread_equal(pthread_self(), bridge_channel->thread)) {
while (bridge_channel->waiting) {
pthread_kill(bridge_channel->thread, SIGURG);
sched_yield();
}
/* Wake up the bridge channel thread. */
ast_queue_frame(bridge_channel->chan, &ast_null_frame);
}
}
@@ -1883,13 +1881,11 @@ static void bridge_channel_wait(struct ast_bridge_channel *bridge_channel)
ast_debug(10, "Bridge %s: %p(%s) is going into a waitfor\n",
bridge_channel->bridge->uniqueid, bridge_channel,
ast_channel_name(bridge_channel->chan));
bridge_channel->waiting = 1;
ast_bridge_channel_unlock(bridge_channel);
outfd = -1;
ms = bridge_channel_next_interval(bridge_channel);
chan = ast_waitfor_nandfds(&bridge_channel->chan, 1,
&bridge_channel->alert_pipe[0], 1, NULL, &outfd, &ms);
bridge_channel->waiting = 0;
if (ast_channel_softhangup_internal_flag(bridge_channel->chan) & AST_SOFTHANGUP_UNBRIDGE) {
ast_channel_clear_softhangup(bridge_channel->chan, AST_SOFTHANGUP_UNBRIDGE);
ast_bridge_channel_lock_bridge(bridge_channel);